1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 /***************************************************************************************** 8 ******************** This file was generated by sksllex. Do not edit. ******************* 9 *****************************************************************************************/ 10 #ifndef SKSL_Lexer 11 #define SKSL_Lexer 12 #include <cstdint> 13 #include <string_view> 14 namespace SkSL { 15 16 struct Token { 17 enum class Kind { 18 TK_END_OF_FILE, 19 TK_FLOAT_LITERAL, 20 TK_INT_LITERAL, 21 TK_BAD_OCTAL, 22 TK_TRUE_LITERAL, 23 TK_FALSE_LITERAL, 24 TK_IF, 25 TK_ELSE, 26 TK_FOR, 27 TK_WHILE, 28 TK_DO, 29 TK_SWITCH, 30 TK_CASE, 31 TK_DEFAULT, 32 TK_BREAK, 33 TK_CONTINUE, 34 TK_DISCARD, 35 TK_RETURN, 36 TK_IN, 37 TK_OUT, 38 TK_INOUT, 39 TK_UNIFORM, 40 TK_CONST, 41 TK_FLAT, 42 TK_NOPERSPECTIVE, 43 TK_INLINE, 44 TK_NOINLINE, 45 TK_PURE, 46 TK_READONLY, 47 TK_WRITEONLY, 48 TK_BUFFER, 49 TK_STRUCT, 50 TK_LAYOUT, 51 TK_HIGHP, 52 TK_MEDIUMP, 53 TK_LOWP, 54 TK_ES3, 55 TK_EXPORT, 56 TK_WORKGROUP, 57 TK_PIXELLOCAL, 58 TK_RESERVED, 59 TK_PRIVATE_IDENTIFIER, 60 TK_IDENTIFIER, 61 TK_DIRECTIVE, 62 TK_LPAREN, 63 TK_RPAREN, 64 TK_LBRACE, 65 TK_RBRACE, 66 TK_LBRACKET, 67 TK_RBRACKET, 68 TK_DOT, 69 TK_COMMA, 70 TK_PLUSPLUS, 71 TK_MINUSMINUS, 72 TK_PLUS, 73 TK_MINUS, 74 TK_STAR, 75 TK_SLASH, 76 TK_PERCENT, 77 TK_SHL, 78 TK_SHR, 79 TK_BITWISEOR, 80 TK_BITWISEXOR, 81 TK_BITWISEAND, 82 TK_BITWISENOT, 83 TK_LOGICALOR, 84 TK_LOGICALXOR, 85 TK_LOGICALAND, 86 TK_LOGICALNOT, 87 TK_QUESTION, 88 TK_COLON, 89 TK_EQ, 90 TK_EQEQ, 91 TK_NEQ, 92 TK_GT, 93 TK_LT, 94 TK_GTEQ, 95 TK_LTEQ, 96 TK_PLUSEQ, 97 TK_MINUSEQ, 98 TK_STAREQ, 99 TK_SLASHEQ, 100 TK_PERCENTEQ, 101 TK_SHLEQ, 102 TK_SHREQ, 103 TK_BITWISEOREQ, 104 TK_BITWISEXOREQ, 105 TK_BITWISEANDEQ, 106 TK_SEMICOLON, 107 TK_WHITESPACE, 108 TK_LINE_COMMENT, 109 TK_BLOCK_COMMENT, 110 TK_INVALID, 111 TK_NONE, 112 }; 113 TokenToken114 Token() {} TokenToken115 Token(Kind kind, int32_t offset, int32_t length) 116 : fKind(kind), fOffset(offset), fLength(length) {} 117 118 Kind fKind = Kind::TK_NONE; 119 int32_t fOffset = -1; 120 int32_t fLength = -1; 121 }; 122 123 class Lexer { 124 public: start(std::string_view text)125 void start(std::string_view text) { 126 fText = text; 127 fOffset = 0; 128 } 129 130 Token next(); 131 132 struct Checkpoint { 133 int32_t fOffset; 134 }; 135 getCheckpoint()136 Checkpoint getCheckpoint() const { return {fOffset}; } 137 rewindToCheckpoint(Checkpoint checkpoint)138 void rewindToCheckpoint(Checkpoint checkpoint) { fOffset = checkpoint.fOffset; } 139 140 private: 141 std::string_view fText; 142 int32_t fOffset; 143 }; 144 145 } // namespace SkSL 146 #endif 147